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Dont know what this flower is
Hi last this summer I noticed these big tall random plants that i did not plant in my garden grew,they are about 5 or 6ft high and bright yellow as seen in the image below I don't know how they got there wind I guess but I would love to have someone identify them as i fear they might not come back next season.
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helenium?
Helianthus l think.
I think AnniD is right ; looks like a form of Helianthus pauciflorus , which I believe is perennial .
I have H.'Lemon Queen' in full glory right now , but I have found it spreads quickly by underground rhizomes , and needs splitting fairly regularly .
that's the one, "helenium", tsk @ self
Thanks guys for replying